import re

from selenium import webdriver
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from pyquery import PyQuery as pq
import time
import pyodbc


brower=webdriver.Chrome()
brower.get('https://next.xuetangx.com/learn/sxpi61021000461/sxpi61021000461/1515698/exercise/1354621')